Poids de l'ensemble de l'ordre de 40 kg. The SP10 started life in 1970 as a servo-controlled motor unit designed for studio use. In 1975 the much improved SP10 mkII (1975-81) was introduced with Quartz-locked speed control and external power supply; this is the version which found its way into many studios, replacing ageing Garrard 401s and the like. The unit was also made available to the public as the high-end SL1000 mkII system which included the SH-10B3 Obsidian base and EPA100, and later the EPA500 tonearm. For serious professional use the SP10 mkIIP version (as used by the BBC) provided full, wired remote control of start/stop and speed functions. The EPA-100 tonearm represents several significant advances in tonearm technology. A variable dynamic damping system which permits the user to tune the arm for compatibility with virtually any cartridge now available. An extremely stable 4-point Gimbal suspension employing ruby ball bearings which maintain static friction at 5mg or less for movement in any direction. A titanium nitride shaft which is light and also resistant to flexing and resonances. These elements all contribute to one end, keeping the stylus in optimum contact with the record grooves. Although this many seem elementary, the ability of the EPA100 to perform this function in a high grade sound system can make a noticeable difference in the clarity and openness of the resulting sound. To those who associate state of the art tonearms with very low mass, we point out that the damping system makes arm mass non critical no matter what the compliance of the cartridge. Even the inertial effect of the arms mass becomes insignificant due to its overall design. Suspension: gimbal type with 20 precision ruby ball bearings. Adjustable tracking force: 0 to 3g.